Smelting-furnace.



UNITED STATES PATENT @ENCE EDGAR F. BLESSING, OF PHILADELPHIA,PENNSYLFANIA, ASSIGNOR OF TWO-THIRDS TO HERBERT M. SHIMER, OFPHILADELPHIA, PENNSYLVA- NIA, AND FRANK BLESSING, OF HARRISBURG,PENNSYLVANIA.

FURNACE.

SPECIFICATION forming part of Letters Patent No.'725,661, dated April21, 1903.

Application filed J'uly 19, 1902.

To @ZZ whom it may con/cern.'

Be it known that I, EDGAR F. BLESSING, a citizen of the UnitedStates,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented certain new and useful Improvements inSmelting- Furnaces; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to improvements in furnaces; and the object is toproduce a furnace in which metals, such as brass, may be meltedsatisfactorily and without danger of burning the metal during reductionand minimizing the Volatilization of the metal.

The invention consists-of duplicate chambers or muffles arranged so asto be sur? rounded by a continuous passage-Way for the circulationofheat and of means for feeding the metal to the furnace and otherdetails of construction.

The invention is f ully described in the fol-l lowing speciflcation andclearly illustrated in the accompanying drawings.

Figure 1 shows my furnace in vertical section. Fig. 2 is a sectionalview on line w a; of Fig. l. Fig. 3 is a sectional view on line y 'y ofFig. l.

The furnace-body is built of fire-brick or other .suitable material, maybe of any desired form, and has two melting-chambers or ,muffles, a mainchamber A and afsmaller or supplemental chamber B, arranged beneath themain chamber, but spaced therefrom.

The fire-chamber O is located at one end of the furnace adjoining thechamber or muflie A, and directly beneath said chamber C is anotherchamber C for receiving the ashes,&c. A passage-way or heat-flue D leadsfrom the top of the firechamber C over thetop of the chamber or mufIieAdown past its rear end and forward between the bottomA of the uppercham- 45 ber or muiile A and the top of the lower chamber or muffle B,thence downward and beneath the licor of the chamber or mufie B, andupward along its rear end to an opening d into the stack E, as shown byarrows, thus passing 5o entirely around both chambers and creating aSerial No.116.141. (No modell) comparatively uniform temperaturethroughout. The heat is prevented from passing upward around the end ofthe chamber A by the top B ofthe lower chamber or muffle B. This top iscontinued outward beyond the end of the chamber B and forms abaffle-plate or partition between the rear ends of the two inufies,thereby directing the heat into the chimney-opening el. At the same timethis extension serves as a means for compelling 6o the heat to circulatearound both muftles.

A feed device F is located in the top of the furnace and has a doublegate or valve device ff for feeding. The upper slide fis opened, andwhen the proper amount has been fed into the hopper it is closed and thelower slidefopened, thus dropping the feed into the upper chamber ormuftle A of the furnace without any appreciable communication with theouter atmosphere.

The l'loor of the'upper chamber or muffle A is slightly inclined fromits ends, as at A', to a point near the rear end and opposite the feeddevice and is there provided with an opening h into the chamber Bbeneath it. The chamber Bis also provided with an inclined floor Band atits lowest point is located a tap-hole from which to draw the moltenmetal. The lowest part of the chamber or muflie B is located ne'ar. thefront end 8o or at a point directly opposite to that at which theopening in the upper muiiie is located.

When the metal y'is fed into chamber or muffle A, its reduction to amolten state will cause it to flow down the inclined fioor to theopening h and into the chamber or muffle B, and as both chambers areheated by the continuous current of heat through the heat-fine D themetal contained in the lower chamber Will always be ready for tapping.

The furnace is provided with suitable doors la, permitting access to thechambers or muffles for the purpose of mixing the contents thereof orfor repairing, and these doors are substantially air-tight, making asnear as possible an air-tight furnace and overcoming v volatilization asnearly as maybe.

Having thus fully described the invention and its operation, whatIclaim, and desire to secure by Letters Patent, is-

l. A device of the class described consistmg of a heating-chamber, afire-box therein, :L main muiile within said chamber contacting withsaid {ire-box, and a continuous iiue surrounding the mufe and leadingfrom the fire-box, a supplemental mue within the chamber beneath themain muflega flue surrounding the supplemental muftle, and an opening inthe bottom ot' the main muffie communicating with the supplementalmufiie through the top of the latter, a floor in the main muiie inclinedtoward the opening, a tap-opening in the supplemental mufe at theopposite end thereof from the communieating opening of the two mufes, afloor in the supplemental mufe inclined toward the tap-opening, anddoors in said mufes.

2. A device of the class described consisting of a heating-chamber, alire-'box therein, a main mufde Within said chamber contacting with saidfire-box, and a continuous flue surrounding` the mufiie and leading fromthe fire-box, a supplemental mue within the chamber and beneath the mainmufie, a flue surrounding the supplemental muftle, and an opening in thebottom of the main muffle communicating with the supplemental mufdethrough the top of the latter, a floor in the main mufle inclined towardthe opening, a tap-opening in the supplemental muide at the opposite endthereof from the communieating opening of the two muffies, a Hoor in thesupplemental mufde inclined toward the tap-opening, and an extension onthe top of the supplemental mufiie forming a. partition between the fluesurrounding the main muftie and the exit of the flue ,surrounding thesupplemental muffle.

In testimony whereof I aix my signature in presence of two witnesses.

- EDGAR F. BLESSIN G.

Witnesses:

GEO. REED, WM. A. RILEY.

